826133489 has 2 divisors, whose sum is σ = 826133490. Its totient is φ = 826133488.

The previous prime is 826133393. The next prime is 826133491. The reversal of 826133489 is 984331628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 615883489 + 210250000 = 24817^2 + 14500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-826133489 is a prime.

Together with 826133491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (826136489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413066744 + 413066745.

It is an arithmetic number, because the mean of its divisors is an integer number (413066745).

Almost surely, 2^826133489 is an apocalyptic number.

It is an amenable number.

826133489 is a deficient number, since it is larger than the sum of its proper divisors (1).

826133489 is an equidigital number, since it uses as much as digits as its factorization.

826133489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 826133489 is about 28742.5379707499. The cubic root of 826133489 is about 938.3180610410.

The spelling of 826133489 in words is "eight hundred twenty-six million, one hundred thirty-three thousand, four hundred eighty-nine".